Method for dismounting an engine bed

Abstract

This invention relates to a method for disassembling an engine base, comprising the following steps: removing the fixing bolts between the base and the engine body; installing a threaded disassembly tool in the disassembly hole between the base and the engine body, with the bottom end of the threaded disassembly tool abutting the bottom of the disassembly hole, and the bottom end of the external thread section of the threaded disassembly tool initially threadedly connected to the top end of the internal thread section of the disassembly hole; rotating the threaded disassembly tool, and with the cooperation of the external and internal thread sections, the base is lifted and separated from the engine body until the locating pin disengages from the base; and using lifting equipment and slings to lift the base. The method of this invention saves time and effort, and reduces labor costs.

Description

Technical Field

[0001] This invention relates to the field of engine technology, and more specifically to a method for disassembling an engine base. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] The base is one of the main components of the engine. The engine base and the engine body combine to form the spindle hole, which plays a positioning role for the high-speed rotating spindle, thereby ensuring the motion quality and service life of the spindle.

[0004] When assembling the engine base and the engine block, the locating pins on the engine block are inserted into the locating blind holes of the base to position the engine block and the base. Then, the engine block and the base are fixed together using multiple fixing bolts. When disassembling the engine block and the base, after removing the fixing bolts, a lifting strap is passed through the spindle hole formed by the combination of the base and the engine block. The lifting strap is then connected to the lifting equipment, which uses the lifting strap to lift the base. However, the inventors found that with this method, because the lifting equipment is not easy to control the lifting strap, the base sways significantly during the lifting process, which can easily damage the locating pins. Therefore, 3-4 workers are needed around the base using pry bars to prevent the base from swaying too much. As a result, the entire disassembly process requires a large number of workers, is time-consuming and labor-intensive, and poses certain safety hazards. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a method for disassembling an engine base, which avoids damage to the positioning pins during disassembly and saves labor.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] An embodiment of the present invention provides a method for disassembling an engine base, comprising the following steps:

[0008] Remove the fixing bolts between the base and the body;

[0009] Install a threaded disassembly tool in the disassembly hole between the base and the body. The bottom end of the threaded disassembly tool abuts the bottom of the disassembly hole, and the bottom end of the external thread section of the threaded disassembly tool is initially threadedly connected to the top end of the internal thread section of the disassembly hole.

[0010] Rotate the threaded disassembly tool; with the cooperation of the external and internal threaded sections, the base is lifted and separated from the machine body until the locating pin disengages from the base.

[0011] The base is lifted using lifting equipment and slings.

[0012] Optionally, the disassembly hole includes an internal thread section, a guide section, and a positioning section, wherein one end of the internal thread section extends to the top surface of the base, and the other end is connected to one end of the guide section, and the other end of the guide section extends into the interior of the machine body and is connected to one end of the positioning section.

[0013] Optionally, the diameter of the positioning segment is smaller than the diameter of the guide segment.

[0014] Optionally, the thread removal tool includes an external thread rod that matches the internal thread section. The external thread rod has an external thread structure that matches the internal thread section. One end of the external thread rod is connected to one end of a guide rod that matches the guide section. The other end of the guide rod is connected to one end of a positioning rod that matches the positioning section.

[0015] Optionally, the axial length of the external thread section of the thread removal tool is greater than the axial length of the locating pin extending to the outside of the machine body.

[0016] Optionally, the thread-removing tool can be rotated using an electric wrench.

[0017] Optionally, the end of the external thread removal tool is provided with a clamping head that matches the electric wrench.

[0018] Optionally, the cross-section of the clamping head is a regular hexagon.

[0019] Optionally, multiple disassembly holes are provided, and the multiple disassembly holes are arranged symmetrically at the center of the overall structure formed by the body and the base.

[0020] Optionally, after the base is disengaged from the locating pin, a lifting strap is passed through the main shaft hole of the base, and then the lifting strap is connected to the lifting equipment to lift the base.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The base disassembly method of the present invention utilizes the rotation of an external threaded disassembly tool to lift the base, causing the base to disengage from the positioning pin. After the base disengages from the positioning pin, it is then lifted using lifting equipment and slings. During the lifting process using the external threaded disassembly tool, the base will not shake significantly, and the positioning pin will not be damaged. This avoids the need for multiple workers to use pry bars to prevent the base from shaking significantly, saving manpower, saving time and effort, and avoiding personal safety hazards to workers.

[0023] 2. The base disassembly method of the present invention has a disassembly hole with a guide section and a positioning section. Correspondingly, the threaded disassembly tool has a guide rod and a positioning rod. During the use of the threaded disassembly tool, its position and verticality can be guaranteed, so that during the rotation of the threaded disassembly tool, the base rises vertically at all disassembly hole positions without jamming, thus ensuring the smooth progress of the disassembly process. Attached Figure Description

[0024] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0025] Figure 1 This is a schematic diagram of the external thread disassembly tool structure according to Embodiment 1 of the present invention;

[0026] Figure 2 This is a flowchart of the method in Embodiment 1 of the present invention;

[0027] Figure 3 This is a schematic diagram of the external thread disassembly tool and the base in Embodiment 1 of the present invention;

[0028] Figure 4 This is the present invention. Figure 3 A schematic diagram of the section along direction A;

[0029] Among them, 10. Body, 20. Base, 30. Disassembly hole, 40. Fixing bolt, 50. External thread disassembly tool; 51. Clamp head, 52. External thread rod, 53. Guide rod, 54. Positioning rod. Detailed Implementation

[0030] For ease of description, the words "upper" and "lower" appearing in this invention only indicate that they are consistent with the upper and lower directions of the accompanying drawings and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Example 1

[0032] This embodiment provides a method for removing an engine base, which is used to remove the engine base from the engine body.

[0033] A disassembly hole 30 is provided between the base 20 and the body 10 of the engine. The base 20 is removed from the body 10 by using an external thread disassembly tool 50 in conjunction with the disassembly hole 30.

[0034] In this embodiment, during disassembly, the base 20 is located above the body 10, and the disassembly hole 30 includes an internal thread section, a guide section, and a positioning section arranged sequentially from top to bottom.

[0035] In the case where the base 20 is located above the body 10, the internal thread section is opened inside the base 20, one end of which extends to the top surface of the base 20, and the other end is coaxially connected to one end of the guide section. The other end of the guide section extends into the body 10 and is coaxially connected to one end of the positioning section. The positioning section is opened inside the body 10.

[0036] The diameter of the guide section is larger than the diameter of the positioning section.

[0037] In order to ensure that the base 20 is subjected to uniform force during disassembly, multiple disassembly holes 30 are provided, and the multiple disassembly holes 30 are symmetrically arranged along the center of the overall structure formed by the base 20 and the body 10.

[0038] In this embodiment, four disassembly holes 30 are provided. It is understood that those skilled in the art can set the number of disassembly holes according to actual needs.

[0039] like Figure 1 As shown, the external thread disassembly tool includes an external thread rod 52, a guide rod 53, and a positioning rod 54 arranged coaxially in sequence.

[0040] The external thread rod 52 has an external thread structure that matches the internal thread section and can be threadedly connected to the internal thread section of the disassembly hole 30. The diameter of the guide rod 53 matches the guide section and can be slidably connected to the guide section. The positioning rod 54 matches the size of the positioning section and can cooperate with the positioning section to position the external thread disassembly tool 50.

[0041] Since the diameter of the guide section is larger than the diameter of the positioning section, the diameter of the guide rod 53 is larger than the diameter of the positioning rod 54.

[0042] One end of the external threaded rod 52 is coaxially connected to the guide rod 53, and the other end is provided with a clamping head 51, which allows the operator to rotate the entire external thread disassembly tool 50.

[0043] To facilitate the rotation of the clamp head 51 by the operator using an electric wrench, the cross-section of the clamp head 51 is a regular hexagon, and the clamp head 51 can cooperate with the electric wrench.

[0044] In order to meet the requirement that the base 20 can be completely detached from the locating pin, the length of the external threaded rod 52 is greater than the length of the portion of the locating pin that extends above the surface of the body 10.

[0045] like Figure 2 As shown, the base disassembly method in this embodiment includes the following steps:

[0046] Step 1: Use a lifting device to flip the engine so that the base is facing upwards and the engine body 10 is located below the base 20.

[0047] Step 2: Remove the fixing bolts 40 between the engine block 10 and the base 20.

[0048] Step 3: As Figure 3-4As shown, the external thread removal tool 50 is installed sequentially in the four disassembly holes 30 between the engine body 10 and the base 20. Specifically, the external thread removal tool 50 is coaxially aligned with the disassembly hole 30, the positioning rod 54 is inserted into the positioning section, the guide rod 53 is inserted into the guide section, and the clamp head 51 is manually rotated so that the external thread rod 52 is initially threadedly connected to the internal thread section of the disassembly hole 30, and the positioning rod 54 abuts against the bottom of the disassembly hole 30.

[0049] Step 4: Two workers stand on either side of the base 20. One worker operates the two external thread removal tools 50 on one side, and the other worker operates the two external thread removal tools 50 on the other side. The two workers use an electric wrench to rotate the clamp head 54 in sync, which drives the external thread removal tools 50 to rotate. Under the threaded engagement of the external thread rod 52 and the internal thread section of the removal hole 30, the base 20 rises and separates from the machine body 10. When the base 20 rises to the point of disengaging from the positioning pin, the rotation of the external thread removal tools 50 stops.

[0050] In this embodiment, through the cooperation of the guide rod 53 and the guide section, and the cooperation of the positioning rod 54 and the positioning section, the base 20 can be accurately raised vertically, and the partial movement of the base 20 at each disassembly hole 30 is synchronized, without jamming, thus ensuring the smooth progress of the disassembly process.

[0051] Step 5: Pass the sling through the spindle hole of the base 20, then connect the sling to the lifting equipment. After removing the four external thread disassembly tools, use the lifting equipment to lift the base to the set position.

[0052] The disassembly method of this embodiment uses the rotation of the external thread disassembly tool 50 to lift the base, causing the base 20 to disengage from the positioning pin. After the base 20 disengages from the positioning pin, the base is then lifted using lifting equipment and slings. During the lifting process of the base 20 using the external thread disassembly tool 50, the base 20 will not shake significantly, and the positioning pin will not be damaged. This avoids the need for multiple workers to use pry bars to prevent the base from shaking significantly. Only two people are required to complete the operation, saving manpower, time and effort, and avoiding personal safety hazards to workers.

[0053] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An engine bed dismounting method, characterized by, Includes the following steps: Remove the fixing bolts between the base and the body; A threaded disassembly tool is installed in the disassembly hole between the base and the body. The bottom end of the threaded disassembly tool abuts the bottom of the disassembly hole, and the bottom end of the external thread section of the threaded disassembly tool is initially threadedly connected to the top end of the internal thread section of the disassembly hole. The disassembly hole includes an internal thread section, a guide section, and a positioning section arranged sequentially from top to bottom and coaxially connected. The diameter of the positioning section is smaller than the diameter of the guide section. The threaded disassembly tool includes an external thread rod, a guide rod, and a positioning rod that match the internal thread section. The external thread rod has an external thread structure that matches the internal thread section. One end of the external thread rod is connected to one end of the guide rod, which matches the guide section. The other end of the guide rod is connected to one end of the positioning rod, which matches the positioning section. Multiple disassembly holes are provided, and these holes are symmetrically arranged around the center of the overall structure formed by the body and the base. Rotate the threaded disassembly tool; with the cooperation of the external and internal threaded sections, the base is lifted and separated from the machine body until the locating pin disengages from the base. After the base is disengaged from the locating pin, pass the sling through the spindle hole of the base, connect the sling to the lifting equipment, remove the threaded disassembly tool, and use the lifting equipment and sling to lift the base.

2. A method of disassembling an engine bed as claimed in claim 1, wherein, One end of the internal thread section extends to the top surface of the base, and the other end is connected to one end of the guide section. The other end of the guide section extends into the interior of the machine body and is connected to one end of the positioning section.

3. A method of disassembling an engine bed as claimed in claim 1, wherein, The axial length of the external thread section of the threaded removal tool is greater than the axial length of the locating pin extending to the outside of the machine body.

4. The method of claim 1, wherein, The thread-removing tool is rotated using an electric wrench.

5. The method for disassembling an engine base as described in claim 1, characterized in that, The end of the thread removal tool is equipped with a clamping head that matches an electric wrench.

6. The method for disassembling an engine base as described in claim 5, characterized in that, The clamping head has a regular hexagonal cross-section.

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